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Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Highly stretchable electric circuits from a composite material of silver nanoparticles and elastomeric fibres

Cited 45 times inthomson ciCited 36 times inthomson ci
Title
Highly stretchable electric circuits from a composite material of silver nanoparticles and elastomeric fibres
Author
Park, MinwooIm, JungkyunShin, MinkwanMin, YuhoPark, JaeyoonCho, HeesookPark, SoojinShim, Mun-BoJeon, SanghunChung, Dae-YoungBae, JihyunPark, JongjinJeong, UnyongKim, Kinam
Keywords
CARBON NANOTUBES; ELASTIC CONDUCTORS; POLYMER; RUBBER; FILMS; TEXTILES
Issue Date
201212
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE NANOTECHNOLOGY, v.7, no.12, pp.803 - 809
Abstract
Conductive electrodes and electric circuits that can remain active and electrically stable under large mechanical deformations are highly desirable for applications such as flexible displays(1-3), field-effect transistors(4,5), energy-related devices(6,7), smart clothing(8) and actuators(9-11). However, high conductivity and stretchability seem to be mutually exclusive parameters. The most promising solution to this problem has been to use one-dimensional nanostructures such as carbon nanotubes and metal nanowires coated on a stretchable fabric(12,13), metal stripes with a wavy geometry(14,15), composite elastomers embedding conductive fillers(16,17) and interpenetrating networks of a liquid metal and rubber(18). At present, the conductivity values at large strains remain too low to satisfy requirements for practical applications. Moreover, the ability to make arbitrary patterns over large areas is also desirable. Here, we introduce a conductive composite mat of silver nanoparticles and rubber fibres that allows the formation of highly stretchable circuits through a fabrication process that is compatible with any substrate and scalable for large-area applications. A silver nanoparticle precursor is absorbed in electrospun poly (styrene-block-butadiene-block-styrene) (SBS) rubber fibres and then converted into silver nanoparticles directly in the fibre mat. Percolation of the silver nanoparticles inside the fibres leads to a high bulk conductivity, which is preserved at large deformations (sigma approximate to 2,200 S cm(-1) at 100% strain for a 150-mm-thick mat). We design electric circuits directly on the electrospun fibre mat by nozzle printing, inkjet printing and spray printing of the precursor solution and fabricate a highly stretchable antenna, a strain sensor and a highly stretchable light-emitting diode as examples of applications.
URI
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DOI
http://dx.doi.org/10.1038/NNANO.2012.206
ISSN
1748-3387
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